// /src/pages/hot/hot.vue
<script setup lang="ts">
  import { ref } from 'vue'
  import { onLoad } from '@dcloudio/uni-app';
  import { getHotInVogueAPI } from '@/services/hot'
  import type { HotResult, SubTypeItem } from '@/types/hot'

  // 热门推荐页 标题和url
  const hotMap = [
    { type: '1', title: '特惠推荐', url: '/hot/preference' },
    { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
    { type: '3', title: '一站买全', url: '/hot/oneStop' },
    { type: '4', title: '新鲜好物', url: '/hot/new' },
  ]

  // 获取路由参数--也可以通过onLoad获取
  const query = defineProps<{
    type : string
  }>()
  // 匹配目标标题
  const currentHotMap = hotMap.find(x => x.type === query.type)
  uni.setNavigationBarTitle({
    title: currentHotMap!.title
  })

  // banner图片数据
  const bannerPicture = ref('')
  // subTitle标题数据
  const subTypes = ref<(SubTypeItem & { finish ?: boolean })[]>([])
  // 获取热门推荐数据
  const getHotInVogue = async () => {
    const res = await getHotInVogueAPI(currentHotMap!.url)
    bannerPicture.value = res.result.bannerPicture
    subTypes.value = res.result.subTypes
  }


  // 高亮下表索引
  const subTypesIndex = ref(0)

  // 滚动到底部了
  const onScrolltolower = async () => {
    // 加载数据
    const currentSubTypes = subTypes.value[subTypesIndex.value]
    if (currentSubTypes.goodsItems.page < currentSubTypes.goodsItems.pages) {
      // 累加页数
      currentSubTypes.goodsItems.page++
    }
    else {
      currentSubTypes.finish = true
      return uni.showToast({
        icon: "none",
        title: '数据加载完毕~'
      })
    }
    const res = await getHotInVogueAPI(currentHotMap!.url, { subType: currentSubTypes.id, page: currentSubTypes.goodsItems.page, pageSize: currentSubTypes.goodsItems.pageSize })
    // 累加数组
    subTypes.value[subTypesIndex.value].goodsItems.items = [...subTypes.value[subTypesIndex.value].goodsItems.items, ...res.result.subTypes[subTypesIndex.value].goodsItems.items]
  }
  onLoad(() => {
    getHotInVogue()
  })
</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="bannerPicture"></image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text class="text" :class="{active:subTypesIndex===index}" @tap="subTypesIndex=index"
        v-for="(item,index) in subTypes" :key="item.id">{{item.title}}</text>
    </view>
    <!-- 推荐列表 -->
    <scroll-view @scrolltolower="onScrolltolower" lower-threshold="10" scroll-y class="scroll-view"
      v-for="(item,index) in subTypes" v-show="subTypesIndex===index" :key="item.id">
      <view class="goods">
        <navigator hover-class="none" class="navigator" v-for="goods in item.goodsItems.items" :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`">
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{goods.name}}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{goods.price}}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">{{item.finish===true?'数据加载完毕':'正在加载'}}</view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
  page {
    height: 100%;
    background-color: #f4f4f4;
  }

  .viewport {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 180rpx 0 0;
    position: relative;
  }

  .cover {
    width: 750rpx;
    height: 225rpx;
    border-radius: 0 0 40rpx 40rpx;
    overflow: hidden;
    position: absolute;
    left: 0;
    top: 0;
  }

  .scroll-view {
    flex: 1;
  }

  .tabs {
    display: flex;
    justify-content: space-evenly;
    height: 100rpx;
    line-height: 90rpx;
    margin: 0 20rpx;
    font-size: 28rpx;
    border-radius: 10rpx;
    box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
    color: #333;
    background-color: #fff;
    position: relative;
    z-index: 9;

    .text {
      margin: 0 20rpx;
      position: relative;
    }

    .active {
      &::after {
        content: '';
        width: 40rpx;
        height: 4rpx;
        transform: translate(-50%);
        background-color: #27ba9b;
        position: absolute;
        left: 50%;
        bottom: 24rpx;
      }
    }
  }

  .goods {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 0 20rpx 20rpx;

    .navigator {
      width: 345rpx;
      padding: 20rpx;
      margin-top: 20rpx;
      border-radius: 10rpx;
      background-color: #fff;
    }

    .thumb {
      width: 305rpx;
      height: 305rpx;
    }

    .name {
      height: 88rpx;
      font-size: 26rpx;
    }

    .price {
      line-height: 1;
      color: #cf4444;
      font-size: 30rpx;
    }

    .symbol {
      font-size: 70%;
    }

    .decimal {
      font-size: 70%;
    }
  }

  .loading-text {
    text-align: center;
    font-size: 28rpx;
    color: #666;
    padding: 20rpx 0 50rpx;
  }
</style>
